<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
      label-position="left" style="background: rgb(19 21 46); margin-top: 12%;padding: 34px 35px 0; border-radius: 5px;">
      <div class="title-container">
        <h3 class="title">{{ loginTitle }}</h3>
      </div>
      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input ref="username" v-model="loginForm.username" placeholder="账号" name="username" type="text" tabindex="1"
          auto-complete="on" class="username" />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType" placeholder="密码"
          name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;"
        @click.native.prevent="handleLogin">登录</el-button>
    </el-form>
    <vue-particles color="#6495ED" :particleOpacity="0.7" :particlesNumber="80" shapeType="circle" :particleSize="4"
      linesColor="#6495ED" :linesWidth="1" :lineLinked="true" :lineOpacity="0.6" :linesDistance="150" :moveSpeed="3"
      :hoverEffect="true" hoverMode="grab" :clickEffect="true" clickMode="push">
    </vue-particles>

    <bgAnimation />
    <!-- <modal 
      title="提示" 
      :content="modalContent"
      :visible.sync="visible" 
      @confirm="confirm">
    </modal> -->
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import { setUser } from '@/utils/auth'
import { logTitle } from '@/api/user'

export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('账号不正确'))
      } else {
        callback()
      }
      // if (value.length < 2) {
      //   callback(new Error('账号不正确'))
      // } else {
      //   callback()
      // }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 4) {
        callback(new Error('密码不正确'))
      } else {
        callback()
      }
    }
    return {
      loginTitle: '',
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
    }
  },

  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
        if (route.path == '/login') {
          this.redirect = '/brand'
        }
      },
      immediate: true
    }
  },

  mounted() {

  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
      setUser(this.loginForm.username)
    },
  },
  beforeCreate() {
    logTitle().then(res => {
      console.log(res);
      this.loginTitle = res.msg.content
    })
  },
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: rgb(19, 21, 46);
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    // z-index: 1001;
    color: $cursor;
  }
}

.el-form {
  z-index: 1001;
  // color: #d3d7f7;
  -ms-animation: cloud 2s 3s ease-in infinite alternate;
  -moz-animation: cloud 2s 3s ease-in infinite alternate;
  -webkit-animation: cloud 2s 3s ease-in infinite alternate;
  -o-animation: cloud 2s 3s ease-in infinite alternate;
  -webkit-animation: cloud 2s 3s ease-in infinite alternate;
  animation: cloud 2s 3s ease-in infinite alternate;

}

/* reset element-ui css */
.login-container {
  // z-index: 1001;
  // -webkit-transform: translate3d(-50%, -50%, 0);
  // transform: translate3d(-50%, -50%, 0);

  -ms-animation: cloud 2s 3s ease-in infinite alternate;
  -moz-animation: cloud 2s 3s ease-in infinite alternate;
  -webkit-animation: cloud 2s 3s ease-in infinite alternate;
  -o-animation: cloud 2s 3s ease-in infinite alternate;
  -webkit-animation: cloud 2s 3s ease-in infinite alternate;
  animation: cloud 2s 3s ease-in infinite alternate;

  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  max-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}

@-ms-keyframes cloud {
  0% {
    -ms-transform: translate(-50%, -50%);
  }

  40% {
    opacity: 1;
  }

  60% {
    opacity: 1;
  }

  100% {
    -ms-transform: translate(-50%, -40%);
  }
}

@-moz-keyframes cloud {
  0% {
    -moz-transform: translate(-50%, -50%);
  }

  40% {
    opacity: 1;
  }

  60% {
    opacity: 1;
  }

  100% {
    -moz-transform: translate(-50%, -40%);
  }
}

@-o-keyframes cloud {
  0% {
    -o-transform: translate(-50%, -50%);
  }

  40% {
    opacity: 1;
  }

  60% {
    opacity: 1;
  }

  100% {
    -o-transform: translate(-50%, -40%);
  }
}

@-webkit-keyframes cloud {
  0% {
    -webkit-transform: translate(-50%, -50%);
  }

  40% {
    opacity: 1;
  }

  60% {
    opacity: 1;
  }

  100% {
    -webkit-transform: translate(-50%, -40%);
  }
}

@keyframes cloud {
  0% {
    transform: translate(-50%, -50%);
  }

  40% {
    opacity: 1;
  }

  60% {
    opacity: 1;
  }

  100% {
    transform: translate(-50%, -40%);
  }
}
</style>
